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Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
M. M. R. Williams
Nuclear Science and Engineering | Volume 26 | Number 2 | October 1966 | Pages 262-270
Technical Paper | doi.org/10.13182/NSE66-A28168
Articles are hosted by Taylor and Francis Online.
The time and space eigenvalues of the Boltzmann equation have been obtained, particular attention being given to those eigenvalues which lie close to the limit point. This has been possible by the use of a synthetic kernel, which converts the usual integral equation to a differential one: the solution of this equation is obtained by the W.K.B. method. Results have been obtained for the infinite and finite medium time eigenvalues in the gas model approximation. The eigenvalues of the scattering operator have been shown to be infinite in number—also for the gas model. For the space eigenvalues it has been shown that, for a proton gas, only the fundamental exists, all higher eigenvalues are absent. It is found that as the mass of the gas increases, more space eigenvalues appear, but for any gas of finite mass these are finite in number.